I took costume construction as an elective my last year at college (Fall 2006). It was a ton of work, but really improved my sewing, especially at the finishing stage and attention to detail. Mistakes that I would have let slide when sewing for myself were ripped out and redone multiple times when I was sewing for a grade.
The final project for the class was a doublet that incorporated all sorts of different techniques such as different sleeve caps, piping, zippers, and anything else the instructor could think to throw in. The finished product is something no one would wear in public, but I am insanely proud of how mine turned out. The bright colors and vintage floral print make me very happy.
(not the most flattering of shots)
It took me forever to get this to hang correctly, so it gets a picture by itself.
Artfully draped to give a glimpse of facings and zippers. Everything but the sleeves is backed with trigger.
The class got rather behind as the semester progressed, so we weren't required to do closures or cuffs on the sleeves. Someday I may, but that day is unlikely to come any time soon.